The air to cloth ratio is the volumetric flow rate of air flowing through a dust collector's inlet duct divided by the total cloth area in the filters. The result of air to cloth ratio is typically between 1.5 and 3.5 meters per minute and it is expressed in units of velocity.
Formula:
where,
Q = The Volumetric flow rate (Volume of air through the surface per unit time),
A = The total cloth area in the filters, and
v = Air to cloth ratio
Q = The Volumetric flow rate (Volume of air through the surface per unit time),
A = The total cloth area in the filters, and
v = Air to cloth ratio